I have a doubt about these preposition: on , in.
Thus I made 2 sentences practicing it. Tell me whether they are correct.
We're booked ON flight 607
He wrote the book in a month's time.
Originally Posted by lucas_araujo_22
We're booked ON flight 607.
He wrote the book in a month's time.= The writing took one month.
He will start writing the book in a month's time = a month from now, in the future.
'In' is correct in all these sentences.
Thank you a lot .